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Question Set: Phylum Porifera

Question Set: Phylum Porifera

  1. Why do scientists consider sponges to be the simplest, most basal animals?
     
  2. How is it possible for sponges to survive without a digestive, excretory, circulatory, or respiratory system?
     
  3. What are some possible functions of spicules and spongin? How are these sponge parts alike and different?
     
  4. What are some other uses that humans have for sponges?
     
  5. A gemmule is an example of a cryptobiotic life phase. Can you think of other examples of cryptobiosis in nature?
     
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Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.